Patents by Inventor Arjun Mendiratta
Arjun Mendiratta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240136508Abstract: A dual-layer gradient electrode structure is provided for optimizing power and energy density in batteries. In use, for an electrode of a lithium-based battery, the electrode includes a first layer above an electrically conductive substrate, the first layer including a first plurality of carbon aggregates having a first porosity. Additionally, a second layer is above, at least in part, the first layer, the second layer having a second porosity, and including a second plurality of carbon aggregates. The second plurality of carbon aggregates includes a first group of aggregates and a second group of aggregates. The first group of aggregates is characterized by a first porous structure, and the second group of aggregates is characterized by a second porous structure. Further, the second porous structure is characterized by a density greater than the first porous structure, and the second porosity is greater than the first porosity.Type: ApplicationFiled: October 23, 2022Publication date: April 25, 2024Applicant: Lyten, Inc.Inventors: Kevin Rhodes, Arjun Mendiratta
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Patent number: 11888159Abstract: A material and method are provided for increasing catalytic activity of electrocatalysts. In use, a material comprises synthesized carbon-containing composite materials, synthesized metal-metal carbides, and a heterostructure material comprising the synthesized carbon-containing composite materials and the synthesized metal-metal carbides. The synthesized metal-metal carbides are atom-decorated, at least in part, on the synthesized carbon-containing composite material. Additionally, a method of increasing catalytic activity of an electrocatalyst includes dissolving a metal precursor into a first solution, where the metal precursor comprises a set of characteristics. A heterostructure material is created based on the first solution, wherein catalytic activity of the heterostructure material is a function of the set of characteristics, and wherein the heterostructure material includes a metal-metal carbide that is atom-decorated to synthesized carbon-containing composite materials.Type: GrantFiled: February 10, 2023Date of Patent: January 30, 2024Assignee: LYTEN, INC.Inventors: Kiran Mahankali, Arjun Mendiratta
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Patent number: 11870063Abstract: A dual-layer gradient electrode structure is provided for reducing sulfide transfer. In use, an electrode of a lithium-based battery may comprise a first layer disposed above an electrically conductive substrate, the first layer including a first plurality of carbon aggregates having a first porosity. Additionally, the electrode may comprise a second layer disposed above the first layer, the second layer including a second plurality of carbon aggregates, the second layer including a second porosity which is greater than the first porosity, where a first group of particles of the second layer has a first concentration of interacting functional groups, and a second group of particles of the second layer has a second concentration of the interacting functional groups, the second concentration being greater than the first concentration.Type: GrantFiled: October 24, 2022Date of Patent: January 9, 2024Assignee: Lyten, Inc.Inventors: Kevin Rhodes, Arjun Mendiratta
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Publication number: 20220109094Abstract: Provided herein is a thermoelectric system for generating electricity using ambient temperature oscillations (e.g., between day and night time). The thermoelectric system may comprise a first heat exchanger, a thermoelectric generator, one or more heat conducting units, a second heat exchanger, and a container configured to (i) contain the second heat exchanger and a thermal storage material and (ii) insulate the thermal storage material from an external to the container.Type: ApplicationFiled: May 5, 2021Publication date: April 7, 2022Inventors: Haifan LIANG, Arjun MENDIRATTA, Tristan DAY, Douglas W. THAM, Akram I. BOUKAI
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Publication number: 20180351069Abstract: The present disclosure provides a thermoelectric power management system that includes an electronic device comprising a user interface and a thermoelectric device. The thermoelectric device comprises a thermoelectric unit, a coupler, at least one fastener coupled to the thermoelectric unit and a separate heat expelling unit in thermal communication with the thermoelectric unit. The thermoelectric unit comprises a heat transfer surface that rests adjacent to a body surface of a user and the coupler removably secures the electronic device against the thermoelectric unit. Moreover, the at least one fastener secures the thermoelectric device to the body surface of the user and the thermoelectric device, during use, generates power upon flow of thermal energy from the heat transfer surface to the separate heat expelling unit.Type: ApplicationFiled: May 30, 2018Publication date: December 6, 2018Inventors: Akram I. Boukai, Douglas W. Tham, Haifan Liang, Anne M. Ruminski, Arjun Mendiratta
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Publication number: 20180076341Abstract: A semiconductor system includes a silicon substrate and a porous silicon region disposed on the silicon substrate. The porous silicon region is configured to passivate the surface of the silicon substrate via a field effect and to reduce reflection loss on the silicon substrate via an appropriate refractive index. The porous silicon region is manufactured by a stain etching process, which retrofits existing tools for junction isolation and Phosphorus Silicon Glass (PSG) etch in solar cell manufacturing. The retrofitted tools for junction isolation and PSG etch achieves multiple purposes in a single step, including etch-back, PSG etch, antireflection coating, and passivation of the front surface of the solar cell.Type: ApplicationFiled: March 21, 2016Publication date: March 15, 2018Inventors: Horia M. Faur, Maria Faur, Gregory C. Knight, Arjun Mendiratta
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Patent number: 9793188Abstract: The present invention relates generally to the field of semiconductor devices, including solar cells, and compositions and methods for processing semiconductor devices, passivation of semiconductor surfaces, semiconductor etching and anti-reflective coatings for semiconductor devices.Type: GrantFiled: July 17, 2015Date of Patent: October 17, 2017Inventor: Arjun Mendiratta
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Publication number: 20160181172Abstract: The present invention relates generally to the field of semiconductor devices, including solar cells, and compositions and methods for processing semiconductor devices, passivation of semiconductor surfaces, semiconductor etching and anti-reflective coatings for semiconductor devices.Type: ApplicationFiled: July 17, 2015Publication date: June 23, 2016Inventor: Arjun Mendiratta
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Patent number: 8968485Abstract: An apparatus for processing a substrate, comprising: a process chamber having a track; a carrier connected to the track; upper and lower proximity heads in the chamber and positioned along the path, the proximity heads having opposing faces that define a gap in which a meniscus of fluid is formed, the path being defined along the gap between the opposing faces; a first pre-wet dispenser and a second pre-wet dispenser disposed along side of the upper proximity head and directed toward the path; a drive for moving each of the pre-wet dispensers between a center position along the length of the upper proximity head and opposite outer positions near outer ends of the upper proximity head; and a pre-wet controller for causing the drive to move each of the first and second pre-wet dispensers based on a position of the carrier when moved under the first and second pre-wet dispensers.Type: GrantFiled: September 30, 2011Date of Patent: March 3, 2015Assignee: Lam Research CorporationInventors: Arjun Mendiratta, Cheng-Yu Lin, David Mui
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Patent number: 8758522Abstract: A cleaning material is applied to a surface of a substrate. The cleaning material includes one or more polymeric materials for entrapping contaminants present on the surface of the substrate. A rinsing fluid is applied to the surface of the substrate at a controlled velocity to effect removal of the cleaning material and contaminants entrapped within the cleaning material from the surface of the substrate. The controlled velocity of the rinsing fluid is set to cause the cleaning material to behave in an elastic manner when impacted by the rinsing fluid, thereby improving contaminant removal from the surface of the substrate.Type: GrantFiled: May 25, 2011Date of Patent: June 24, 2014Assignee: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Patent number: 8601639Abstract: An apparatus is provided that includes a substrate support assembly for holding the semiconductor substrate and a dispense head for applying a cleaning material to clean the contaminants from the substrate surface. The dispense head extends across a length of the semiconductor substrate and is positioned proximate to the substrate surface at a distance of between about 0.1 mm and about 4.5 mm. The proximate position enables application of a force to the cleaning material as it is applied to the substrate surface as a film, and the cleaning material provided through the dispense head contains a cleaning liquid, a plurality of solid components, and polymers of a polymeric compound, each of the plurality of solid components and polymers being greater than zero and less than 3% of the cleaning material, the plurality of solid components and the polymers are dispersed for application through the dispense head.Type: GrantFiled: January 16, 2012Date of Patent: December 10, 2013Assignee: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Patent number: 8480809Abstract: A method is provided for receiving the wafer on a support, the support being configured for movement along a direction. While moving the wafer, dispensing a cleaning material to clean contaminants from the surface of the wafer, the dispensing applied as a film over a diameter length of the wafer. The cleaning material contains a cleaning liquid, a plurality of solid components, and polymers of a polymeric compound. Each of the plurality of solid components and polymers being greater than zero and less than 3% of the cleaning material, and wherein the polymers become soluble in the cleaning liquid and the solubilized polymers having long polymer chains that capture and entrap solid components and contaminants in the cleaning liquid. Then, rinsing the film off of the wafer with a rinsing meniscus. The rinsing meniscus applied along the diameter length of the wafer and the film is rinsed after the dispensing.Type: GrantFiled: January 16, 2012Date of Patent: July 9, 2013Assignee: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Publication number: 20130081655Abstract: Apparatus and methods for processing a substrate are described. The methods include generating a fluid meniscus between upper and lower proximity heads. Each of the upper and lower proximity heads has a length that extends up to at least a diameter of the substrate. The method further includes dispensing a pre-wetting fluid towards an edge region of the substrate to form a pre-wet fluid meniscus on the edge region. The method also includes progressively moving the substrate along a path that is defined between the upper and lower proximity heads to progressively establish contact between the pre-wet fluid meniscus and the fluid meniscus.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Applicant: Lam Research CorporationInventors: Arjun Mendiratta, Cheng-Yu Lin, David Mui
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Patent number: 8314055Abstract: The embodiments of the present invention provide improved materials, apparatus, and methods for cleaning wafer surfaces, especially surfaces of patterned wafers (or substrates). The cleaning materials, apparatus, and methods discussed have advantages in cleaning patterned substrates with fine features without substantially damaging the features. The cleaning material includes polymers of one or more polymeric compounds. The cleaning materials can be used in a wide range of viscosity and pH to clean different types of surfaces. The cleaning materials are in liquid phase, and deform around device features to capture the contaminants on the substrate. The polymers entrap the contaminants preventing their return to the substrate surface. The cleaning apparatus is designed to dispense and rinse cleaning materials with a range of viscosities.Type: GrantFiled: July 15, 2009Date of Patent: November 20, 2012Assignee: Lam Research CorporationInventors: David S. L. Mui, Ji Zhu, Arjun Mendiratta
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Patent number: 8227394Abstract: The embodiments of the present invention provide improved materials for cleaning patterned substrates with fine features. The cleaning materials have advantages in cleaning patterned substrates with fine features without substantially damaging the features. The cleaning materials are fluid, either in liquid phase, or in liquid/gas phase, and deform around device features; therefore, the cleaning materials do not substantially damage the device features or reduce damage all together. To assist removing of particles from the wafer (or substrate) surfaces, the polymeric compound of the polymers can contain a polar functional group, which can establish polar-polar molecular interaction and hydrogen bonds with hydrolyzed particles on the wafer surface. The polymers of a polymeric compound(s) with a large molecular weight form long polymer chains and network.Type: GrantFiled: November 7, 2008Date of Patent: July 24, 2012Assignee: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Patent number: 8226775Abstract: The embodiments of the present invention provide methods for cleaning patterned substrates with fine features. The methods for cleaning patterned substrate have advantages in cleaning patterned substrates with fine features without substantially damaging the features by using the cleaning materials described. The cleaning materials are fluid, either in liquid phase, or in liquid/gas phase, and deform around device features; therefore, the cleaning materials do not substantially damage the device features or reduce damage all together. The cleaning materials containing polymers of a polymeric compound with large molecular weight capture the contaminants on the substrate. In addition, the cleaning materials entrap the contaminants and do not return the contaminants to the substrate surface. The polymers of one or more polymeric compounds with large molecular weight form long polymer chains, which can also be cross-linked to form a network (or polymeric network).Type: GrantFiled: June 2, 2008Date of Patent: July 24, 2012Assignee: Lam Research CorporationInventors: David S. L. Mui, Satish Srinivasan, Grant Peng, Ji Zhu, Shih-Chung Kon, Dragan Podlesnik, Arjun Mendiratta
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Patent number: 8211846Abstract: The embodiments of the present invention provide improved materials for cleaning patterned substrates with fine features. The cleaning materials have advantages in cleaning patterned substrates with fine features without substantially damaging the features. The cleaning materials are fluid, either in liquid phase, or in liquid/gas phase, and deform around device features; therefore, the cleaning materials do not substantially damage the device features or reduce damage all together. The cleaning materials containing polymers of a polymeric compound with large molecular weight capture the contaminants on the substrate. In addition, the cleaning materials entrap the contaminants and do not return the contaminants to the substrate surface. The polymers of one or more polymeric compounds with large molecular weight form long polymer chains, which can also be cross-linked to form a network (or polymeric network).Type: GrantFiled: June 2, 2008Date of Patent: July 3, 2012Assignee: Lam Research GroupInventors: David S. L. Mui, Satish Srinivasan, Grant Peng, Ji Zhu, Shih-Chung Kon, Dragan Podlesnik, Arjun Mendiratta
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Publication number: 20120132229Abstract: A method is provided for receiving the wafer on a support, the support being configured for movement along a direction. While moving the wafer, dispensing a cleaning material to clean contaminants from the surface of the wafer, the dispensing applied as a film over a diameter length of the wafer. The cleaning material contains a cleaning liquid, a plurality of solid components, and polymers of a polymeric compound. Each of the plurality of solid components and polymers being greater than zero and less than 3% of the cleaning material, and wherein the polymers become soluble in the cleaning liquid and the solubilized polymers having long polymer chains that capture and entrap solid components and contaminants in the cleaning liquid. Then, rinsing the film off of the wafer with a rinsing meniscus. The rinsing meniscus applied along the diameter length of the wafer and the film is rinsed after the dispensing.Type: ApplicationFiled: January 16, 2012Publication date: May 31, 2012Applicant: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Publication number: 20120132235Abstract: An apparatus is provided that includes a substrate support assembly for holding the semiconductor substrate and a dispense head for applying a cleaning material to clean the contaminants from the substrate surface. The dispense head extends across a length of the semiconductor substrate and is positioned proximate to the substrate surface at a distance of between about 0.1 mm and about 4.5 mm. The proximate position enables application of a force to the cleaning material as it is applied to the substrate surface as a film, and the cleaning material provided through the dispense head contains a cleaning liquid, a plurality of solid components, and polymers of a polymeric compound, each of the plurality of solid components and polymers being greater than zero and less than 3% of the cleaning material, the plurality of solid components and the polymers are dispersed for application through the dispense head.Type: ApplicationFiled: January 16, 2012Publication date: May 31, 2012Applicant: Lam Research CorporationInventors: Ji Zhu, Arjun Mendiratta, David Mui
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Publication number: 20120132234Abstract: A cleaning system for removing contaminants on a surface of a patterned substrate for defining integrated circuit devices is provided. The system includes a substrate carrier for supporting edges of the patterned substrate, and a cleaning head positioned over the patterned substrate. The cleaning head includes a plurality of dispensing holes to dispense a cleaning material on the surface the patterned substrate for defining integrated circuit devices, wherein the cleaning material includes polymers of a polymeric compound. The cleaning head is coupled to a storage of the cleaning material, which is coupled to the cleaning material preparation system. A support structure holds the cleaning head in proximity to the surface of the patterned substrate.Type: ApplicationFiled: December 1, 2011Publication date: May 31, 2012Inventors: David S.L. Mui, Satish Srinivasan, Grant Peng, Ji Zhu, Shih-Chung Kon, Dragan Podlesnik, Arjun Mendiratta